Increase in Margin for Cover orders for Futures&Options

Why there was increase in margin for Future&options for cover orders recently,that was your USP…I really Love Zerodha for amazing initiatives and services but i am really disappointed with this Change.iam a high frequency trader .Margin and lot size is everything for me

Margins charged is a function of the underlying’s volatility. For example the margin on JP Associate was increased due to the wild swings in the stock.